<?php $filename = '1234_56_78 A_FAIRLY_SHORT_TITLE_D.pdf'; $filename = preg_replace('/\\.[^.\\s]{3,4}$/', '', $filename); $parts = preg_split( "(_| )", $filename ); $project_no = $parts[0]; $series_no = $parts[1]; $sheet_no = $parts[2]; $revision = end($parts); $title = implode(' ',\array_diff_key($parts, array_flip([0,1,2,count($parts)-1]))); echo $title;
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